A member asked:

What causes ganglion cysts to develop on the inside of 1st joint of the middle finger?

A doctor has provided 1 answer
Dr. Steven Brown answered

Specializes in Hand Surgery

A2 pulley: Ganglions can develop at the edge of the a1 or a2 pulley of the flexor tendons. Ganglions are synovial cysts arising from a tear or opening in the tendon sheath. Synovial tissue causes cyst to form and emerge from the tear that results from over use or trauma.

Answered 3/15/2017

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